Addressing-machine printing plate



May 19, 1925. 1,538,403

J.KRELL ADDRESSING MACHINE PRINTING PLATE Filed De c. 1923 l fll'iPatented May 19, 1925. V

PATENT OFFICE.

JOSEPH KRELL, OF BEBLIN-PANKOW, GERMANY.

ADDRESSING-MACHINE, PRINTING PLATE.

Application filed December 10, 1923. Serial No. 679,858.

To all whom it may concern: Be it known that I, 'Josnrri KRnnL, acitizen of the German Republic, reslding at Berlin-Pankow, Germany, haveinvented anew and useful Improvement in Addressing-Machine PrintingPlates, of which the sage through the addressing machine shall alsoappear on the stencil as a directly legible teXtin order to enable theoperator of the machine to know at all times which stencil is beingprinted. Further, it is generally necessary that the printing stencilsshall be provided on their front face or their rear face with readilylegible permanent or intechangeable notices for purposes of registrationor for facilitating a convenient and correct arrangement of the stencilsin their filing receptacle from which they are taken for chargingthe'magazine of the addressing machine. It is likewise almost alwaysnecessary that register marks shall be provided on the edge of the saidstencil. These marks have almost always been constituted by clips or thelike. For the purpose of receiving the inter-. changeable notices or thelike the stencils have hitherto been so formed as to allow the smallcards of cardboard or paper containing the notices to be fastenedthereon. Such a formation of the stencils naturally renders theirmanufacture very more complicated than if they were made of plain sheetmetal plates.

The present invention now consists in this that the upper face of theStencils is adapted to receive handwritten notices or the like, whereasthe sheet metal stencils hitherto known would not take ink or colours orgraphite written with a lead pencil, so that therefore handwrittennotices or the like could not be written by hand upon the surface of thestencils.

I The present invention now consists in matting at least one face of asheet metal printing stencil for addressing machines and the likeprinting machines, whereby, as tests stencil for the purpose of filingaway the have shown, the said surface can be written upon extremely wellwith ink, lead pencil, chalks and the like. In general it is preferredto matt both faces of the printing stencil so that the stencil can thenbe written upon by hand on both its faces. The matting of the stencildoes not detrimentally affect either the sharpness of the impressed textor its legibility from the back; in fact, this legibility is ratherimproved by the matting.

The present invention is of special value for the printing stencils ofaddressing machines because the stencils usually provided for suchmachines are generally made of sheet zinc. Now, sheet zinc, which isproduced by rolling in packets has the peculiarity that it has a greasysurface upon which it is impossible to write with any ordinary material.It is also impossible to remove this grease by washing the surface ofthe zinc sheet. The disadvantage of sheet zincnot being capable of beingwritten on, can be overcome only by matting the said surface inaccordance with the present invention.

In the manufacture of stencils according to this invention, it ispreferred to matt the sheet metal (generally sheet zinc, although otherkinds of sheet metal may sometimes be used) on one face or on both itsfaces by means of a sand blast before it is made up into singlestencils, so that then the single stencils are composed entirely ofsheet metal matted on both sides. The stencil sheet metal (instead ofbeing matted by means of a sand blast, may be matted or roughened by anyother means for instance by chemical means. It is also to be understoodthat the matting of one or the other face of the stencils may beperformed after the stencils have been produced from the usual smoothsheet metal.

In a stencil manufactured according to this invention the upper guidingedge may, without being damaged, serve also for the reception of themarks required for registration purposes. These marks which are thenapplied by graphic means to the surface of the guiding edge may consistfor example of stripes of different colours.

The accompanying drawings illustrate an example of an improved printingstencil according to this invent-ion designed for addressing machines ofthe type in which the printing stencils arev moved along in a guidewayon after another in the direction of their length by the machine, forinstance by means of a pushing slide.

In these drawings:

Figure 1 is a view of the upper face of the improved printing stencil;

Figure 2 is a cross section taken along the line IIII of Figure 1, and

Figure 3 is a view of the back or rear face of the stencil.

As shown, the improved stencil has two guiding edges a and 6 each formedof sheet metal doubled over, and it consists of sheet zinc in which thestencil lettering of the address is stamped or otherwise impressed. 1nthe illustrated example of the improved stencil the latter is made ofsheet metal matted on both faces so that the upper face 0 as well as theunder face (Z of the stencil can be written on, as will be perceivedfrom Figures 1 and 3. Consequently in the illus trated stencil the wholeof the space that is not occupied by the stencil lettering is availablefor receiving handwritten notices of any desired nature. Thesehandwritten notices can always beerased if it should become necessary toalter the text of such notices.

The handwritten notices may he applied to the surface of the stencilwith ink, lead pencil, pastel chalk or the like by hand or any othermeans. As will be perceived from the illustrated example in the figures,the surfaces of the upper guiding edge a have also two differentlycolour-ed marks 0, 7 for the purpose of facilitating the tiling of thestencils in the filing receptacles or thelike.

The arrangement or setting out of the impressed lettering upon thestencil, as well as the formation of the stencil in all other respects,is immaterial for the nature of the invention, and is optional so longas at least one face of theshect metal stencil is matted.

I claim:

A zinc printing plate for addressing or like machines having at leastone of its surfaces matted to receive written matter.

In testimony whereof I aflix my signature in presence of two witnesses.

JOSEPH KRELL. lVitnesses E. Kmrrnn, Room: S. AUsrAoH.

